Ba
s
ic Cam
S
witch Operation
Ba
s
ic Cam
S
witch Operation
A PL
μ
S
control’
s
m
a
in p
u
rpo
s
e i
s
to oper
a
te o
u
tp
u
t
s
in
a
m
a
nner th
a
t
s
im
u
l
a
te
s
c
a
m
s
witche
s
. The dr
a
wing to the
right ill
us
tr
a
te
s
the oper
a
tion of
a
c
a
m
s
witch. It
s
f
u
nction i
s
to
s
witch the lo
a
d on
a
nd off
a
t the
sa
me rot
a
ry po
s
ition
s
of
the c
a
m
s
h
a
ft d
u
ring e
a
ch revol
u
tion of th
a
t c
a
m
s
h
a
ft. The
rot
a
ting c
a
m
s
h
a
ft i
s
driven
b
y
a
m
a
chine
a
t
a
1:1 r
a
tio,
s
o
th
a
t the on / off po
s
ition
s
of the c
a
m
s
witch
a
lw
a
y
s
m
a
tch
s
pecific po
s
ition
s
in the m
a
chine cycle. However, c
a
m limit
s
witche
s
h
a
ve the following di
sa
dv
a
nt
a
ge
s
:
u
nreli
ab
le
(we
a
r), h
a
rd to
a
dj
us
t (m
a
chine m
us
t
b
e
s
topped d
u
ring
a
dj
us
tment),
a
nd they c
a
nnot r
u
n
a
t high
s
peed
s
b
ec
aus
e
of cont
a
ct
b
o
u
nce
a
nd exce
ss
ive mech
a
nic
a
l we
a
r.
PL
μ
S
control
s
overcome the
s
e
bas
ic c
a
m
s
witch pro
b
lem
s
.
They h
a
ve no moving we
a
r p
a
rt
s
, they
a
re e
as
y to
a
dj
us
t
from the key
b
o
a
rd with the m
a
chine r
u
nning or
s
topped,
a
nd they c
a
n oper
a
te
a
t
s
peed
s
u
p to
3
000 RPM. They
a
l
s
o
a
dd m
a
ny c
a
p
ab
ilitie
s
f
a
r
b
eyond
s
imple c
a
m
s
witch logic.
The limit
s
witch will t
u
rn on
a
nd off
a
t
the
sa
me c
a
m degree po
s
ition
s
every
c
a
m revol
u
tion (every m
a
chine cycle)
S
tandard Product Feature
s
Keyboard/Controller
The key
b
o
a
rd controller i
s
the m
a
in component of the PL
μ
S
s
y
s
tem. The front keyp
a
d
a
nd di
s
pl
a
y
s
provide
a
complete
us
er interf
a
ce from which every
as
pect of the control’
s
oper
a
tion c
a
n
b
e monitored
a
nd progr
a
mmed. When
properly mo
u
nted with the g
as
ket provided, the key
b
o
a
rd
meet
s
NEMA 4
s
t
a
nd
a
rd
s
. A cle
a
r
s
ilicon r
ubb
er
b
oot
ass
em
b
ly i
s
a
v
a
il
ab
le to provide NEMA 4X protection for
in
s
t
a
ll
a
tion
s
where h
a
r
s
h w
as
hdown chemic
a
l
s
a
re
us
ed.
Ea
s
e of
S
etup
All o
u
tp
u
t po
s
ition
s
etpoint v
a
l
u
e
s
a
re
s
imply entered
thro
u
gh the n
u
meric keyp
a
d. The
s
e
s
etpoint
s
c
a
n
b
e
a
dj
us
ted while the m
a
chine i
s
r
u
nning or
s
topped
b
y
us
ing
the increment, decrement, or n
u
meric key
s
. The key
b
o
a
rd
i
s
a
l
s
o
us
ed to
s
ynchronize the control’
s
po
s
ition to the
m
a
chine, elimin
a
ting the need to mech
a
nic
a
lly
a
dj
us
t the
re
s
olver’
s
s
h
a
ft po
s
ition.
Multiple Pro
g
ram
s
Depending on the model ordered,
u
p to 64 different
progr
a
m
s
, or “jo
b
recipe
s”
c
a
n
b
e
s
tored in the control’
s
memory. Thi
s
minimize
s
down time for jo
b
ch
a
nge over
b
ec
aus
e
s
imply ch
a
nging progr
a
m n
u
m
b
er
s
m
a
ke
s
a
ll of
the o
u
tp
u
t
s
etting ch
a
nge
s
re
qu
ired. Progr
a
m n
u
m
b
er
s
c
a
n
b
e ch
a
nged
b
y mech
a
nic
a
l
s
witche
s
; PLC’
s
(
us
ing the
h
a
rdw
a
re progr
a
m
s
elect inp
u
t
s
); the keyp
a
d; or
s
eri
a
l
comm
u
nic
a
tion me
ssa
ge
s
.
Output
S
peed Compen
s
ation
S
peed compen
sa
tion
a
llow
s
o
u
tp
u
t
s
to compen
sa
te for the
re
s
pon
s
e time of the controlled device
s
b
y t
u
rning on e
a
rlier
as
m
a
chine
s
peed
s
incre
as
e. Thi
s
elimin
a
te
s
the need to
a
dj
us
t o
u
tp
u
t
s
etting
s
whenever m
a
chine
s
peed
s
a
re
ch
a
nged. U
s
ing
s
peed compen
sa
tion often
a
llow
s
higher
prod
u
ction
s
peed
s
a
nd elimin
a
te
s
the need for o
u
tp
u
t
a
dj
us
tment
s
.
Motion ANDin
g
A
s
peed r
a
nge c
a
n
b
e progr
a
mmed into the controller,
a
nd
o
u
tp
u
t
s
c
a
n then
b
e ANDed with the
s
peed r
a
nge
s
o th
a
t
they will
b
e di
sab
led
u
nle
ss
the m
a
chine
s
peed i
s
within the
r
a
nge. Thi
s
c
a
n
b
e
us
ed to t
u
rn off o
u
tp
u
t
s
if the m
a
chine
s
top
s
; di
sab
le o
u
tp
u
t
s
u
ntil the m
a
chine re
a
che
s
a
minim
u
m
s
peed; or di
sab
le o
u
tp
u
t
s
if the m
a
chine goe
s
ab
ove
a
s
pecified m
a
xim
u
m
s
peed. A common
us
e for thi
s
fe
a
t
u
re
i
s
di
sab
ling o
u
tp
u
t
s
to gl
u
e v
a
lve
s
s
o the flow of gl
u
e t
u
rn
s
off if the m
a
chine
s
top
s
.
Timed Output
s
O
u
tp
u
t
s
c
a
n
b
e progr
a
mmed to t
u
rn on
a
t the progr
a
mmed
“
on
”
po
s
ition
a
nd t
u
rn off when the
s
pecified time el
a
p
s
e
s
,
r
a
ther th
a
n
s
t
a
ying on
u
ntil
a
n
“
off
”
po
s
ition i
s
re
a
ched. The
re
su
lt i
s
a
con
s
t
a
nt o
u
tp
u
t d
u
r
a
tion, reg
a
rdle
ss
of m
a
chine
s
peed. The o
u
tp
u
t will t
u
rn off when the
“
off
”
po
s
ition i
s
re
a
ched if it h
as
n’t
a
lre
a
dy timed o
u
t. Timed o
u
tp
u
t
s
a
re
us
ed to drive device
s
which re
qu
ire
a
fixed time to perform
a
t
as
k, reg
a
rdle
ss
of m
a
chine
s
peed.
1-1 Introduction
Introduction
